Cause and Effect – "Why do concrete structures crack?"
Concrete structures crack to find relief from movement. The three contributing movements are: Ground movement, temperature expansion and contraction and loading (eg 10,000 gallons = 45 tonne). Reinforcement is placed in (or around) concrete to "control, limit and minimise" cracking from movement. Movement cannot be stopped!
Naturally, cracks will occur at the weakest point of the structure. Weak points will vary with manufacture, location, design, materials and the manner in which a structure is used.
Why should a crystal growth system work where everything else has failed?
Usually people will apply a membrane over the crack/s. This can be a render (with or without additives), glues, flexible sealants, fibreglass .... the list goes on. As soon as movement occurs, the membrane will tear, crack or puncture. The first occasion of massive movement usually occurs when you initially put the water back in the structure. (Eg 10,000 gallons = 45 tonne) The successful results attained with a crystal growth system are because it repairs and continues to repair the structure as the structure moves!
